The Blue Squadron (1934)
The Blue Squadron is a 1934 Anglo-Italian aviation drama film directed by George King and starring Esmond Knight and John Stuart. The film was a co-production between Britain's Teddington Studios (the UK arm of Warner Brothers) and Italy's Pittaluga studios. Although made under quota quickie conditions, the film seems to have enjoyed a rather more generous budget than was the norm with such productions and was able to include convincing location shots in the snowy Italian mountains.
More at Wikipedia.